66366230165 has 8 divisors (see below), whose sum is σ = 79911285048. Its totient is φ = 52911778240.

The previous prime is 66366230159. The next prime is 66366230179. The reversal of 66366230165 is 56103266366.

It can be written as a sum of positive squares in 4 ways, for example, as 45560475601 + 20805754564 = 213449^2 + 144242^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-66366230165 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22649126 + ... + 22652055.

It is an arithmetic number, because the mean of its divisors is an integer number (9988910631).

Almost surely, 2^66366230165 is an apocalyptic number.

It is an amenable number.

66366230165 is a deficient number, since it is larger than the sum of its proper divisors (13545054883).

66366230165 is a wasteful number, since it uses less digits than its factorization.

66366230165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45301479.

The product of its (nonzero) digits is 699840, while the sum is 44.

The spelling of 66366230165 in words is "sixty-six billion, three hundred sixty-six million, two hundred thirty thousand, one hundred sixty-five".